000 - Simple

Rendering a model with colored triangles. Simple as that.

A basic vertex pipeline that performs the following operations on Suzanne:

1. Transforms suzanne.vertices from Local Space -> Clip Space into a clip_vertices buffer.
2. Iterates suzanne.triangles, discarding any with a vertex that is out of bounds. a. For simplicity I won't be clipping triangles for now.
3. Transforms the triangle from Clip Space -> Normalized Device Coordinates (NDC)
4. Performs back-face culling on the triangle, discards back faces.
5. If front facing: Transforms NDC to Screen Space and appends the screen space data to screen_triangles and screen_vertices respectively. a. screen_triangles is used for a simple depth sort and pointing to the first vertex of this triangle.
6. Sort the screen_triangles slice based on the triangle's average_z in screen space.
7. Iterate each screen_triangle and populate indices and vertices with data from screen_vertices to be used with screen.DrawTriangles.
8. Done!